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Your check engine light is on on a 1996 Saturn SC2 and you did a test on it and it said that your system is too rich P0172 How can you fix this problem?
Wiki User
∙ 17y ago
This is caused by your PCM being unable to adapt enough to correct a problem in the fuel/air mixture. This can be caused by several things, not necessarily in this order. Catalyst plugged Bad Powertrain Control Module Engine parts tolerance Fuel injector(s) stuck open or leaking MAP sensor O2 sensor (upstream) Fuel pressure regulator Wiring harness/connector problem
Wiki User
∙ 17y ago
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How do you fix check engine light code P0172?
P0172 = System to rich (bank1). Year, make and engine would help us help you better.
What does a P0172 code mean exactly for a 1999 Chrysler Concorde lxi with a 3.2 engine?
P0172 System too Rich (Bank 1)
What can be cause of fault code p0172?
In my 98 Saturn SW2, P0172, system too rich, was caused by a bad engine coolant temp sensor. This is a common failure in these vehicles.It's cheap and easy to replace, and worth trying. When you take it out, if it's the original, it will be cracked. The new ones are metal. It takes a 13mm deep socket.
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